Improvement in cotton-gins



UNTTED STATES PATENT OEEIGE.

ROBERT MCKENNA, OF WHITES STATION, TENNESSEE.

IMPROVEMENT IN COTTONfGlNS.

Specification forming part of Letters Patent No. 103.638, dated May 31,1870.

To all whom t may concern:

Be it known that I, ROBERT MCKENNA, of VVhites Station, in the county ofShelby and State of Tennessee, have invented an Improvement inOot-ton-Gins, of which the following is a specitcation:

Nature and Object of 'my Invention.

Description' of the Accompanying Drawing.

Figure I is a longitudinal sectional elevation of a cotton-gin embodyingmy invention. Fig. II is a side elevation of the same. Fig. III is aplan of the same. Fig. IV is a longitudinal section of e j' g enlarged.Fig. V is the plan of e f g enlarged.

General Description.

a is the frame of the cotton-gin. bis the saw-cylinder. c is thebrush-cylinder. d is the roll. h is the breast, all constructed,located, and operated in the usual manner. o is the slat, whichconstitutes the main part of my i11- vention. It is placed horizontallyand longi-v tudinally onthe upper surface of the roll d, and held inposition by the springs ff, the stationary ends of which are fastened tothe beam ofthe breast h.

The amount of pressure ot` the slat c on-the roll d is regulated by thethumb-screws g g, which pass through an orifice in the springs j' j'near their stationary ends, and screw into the beam of the breast h.

Claim.

I claim as my improvement and desire to secure by Letters Patent-` Theslat e and springs ff, when combined and arranged as specified.

ROBERT MCKENNA. Witnesses: i

J onN MCKENNA, OHAs. C. MCCUBBIN.

